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Deflectometer-based analysis of ballasted railway tracks

Citation

Burrow, MPN and Chan, AHC and Shein, A, Deflectometer-based analysis of ballasted railway tracks, Proceedings of the Institution of Civil Engineers - Geotechnical Engineering, 160, (GE3) pp. 169-177. ISSN 0046-5828 (2007) [Refereed Article]


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Copyright Statement

Copyright 2007 ICE Publishing

DOI: doi:10.1680/geng.2007.160.3.169

Abstract

The falling weight deflectometer (FWD) device is used in the UK for the dynamic testing of ballasted railway track. Using the deflection data obtained from the test, elastic modulus values of the track substructure required to build a numerical model of the track can be determined using a procedure known as back-analysis. The numerical model so calibrated can be used to determine the effect of the traffic loads on the stresses, strains and deformations in the railway track system, and is an important component of an analytical approach to track substructure design. In this paper, the use of dynamic finite-element analysis to back-analyse the material properties of the railway substructure from FWD deflection data has been demonstrated by means of an example. The numerical approach presented is the rational method for FWD-based inverse analysis and condition evaluation of ballasted railway tracks, and becomes practicable owing to continued advances in finite-element and computer technologies.

Item Details

Item Type:Refereed Article
Keywords:mathematical modelling, railtrack design, site investigation
Research Division:Engineering
Research Group:Civil Engineering
Research Field:Civil Geotechnical Engineering
Objective Division:Construction
Objective Group:Construction Design
Objective Field:Civil Construction Design
Author:Chan, AHC (Professor Andrew Chan)
ID Code:109974
Year Published:2007
Web of Science® Times Cited:14
Deposited By:Office of the School of Engineering
Deposited On:2016-07-09
Last Modified:2016-09-05
Downloads:0

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